Selective observation of concentration gradients by the laser beam deflection sensor applied to in situ electrochemical studies.  A novel approach

The carbon content of steel affects many of its essential properties, e.g., hardness and mechanical strength. In the powder bed fusion process of metals using a laser beam (PBF-LB/M), usually, pre-alloyed metal powder is solidified layer-by-layer using a laser beam to create parts. A reduction of the carbon content in steels is observed during this process. This study examines adding carbon particles to the metal powder and in situ alloying in the PBF-LB/M process as a countermeasure. Suitable carbon particles are selected and their effect on the particle size distribution and homogeneity of the mixtures is analysed. The workability in PBF-LB is then shown. This is followed by an evaluation of the resulting mechanical properties (hardness and mechanical strength) and microstructure in the as-built state and the state after heat treatment. Furthermore, potential use cases like multi-material or functionally graded parts are discussed.

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Novel Approach of In-situ Nickel Capture Technology to Recycle Silver and Palladium from Waste Nickel-rich Multilayer Ceramic Capacitors

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.125650 ◽

2020 ◽

pp. 125650

Author(s):

Ya Liu ◽

Qingming Song ◽

Lingen Zhang ◽

Zhenming Xu

Keyword(s):

Multilayer Ceramic Capacitors ◽

Novel Approach ◽

Ceramic Capacitors ◽

Multilayer Ceramic

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In-situ constructing uniform polymer network for iron oxide microspheres: A novel approach to improve the cycling stability of the conversion electrodes through chemical interaction

Journal of Power Sources ◽

10.1016/j.jpowsour.2021.229510 ◽

2021 ◽

Vol 489 ◽

pp. 229510

Author(s):

Ting Li ◽

Hao Li ◽

Aiqiong Qin ◽

Daohong Zhang ◽

Fei Xu

Keyword(s):

Iron Oxide ◽

Chemical Interaction ◽

Polymer Network ◽

Cycling Stability ◽

Novel Approach

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In Situ Generation of Green Hybrid Nanofibrillar Polymer-Polymer Composites—A Novel Approach to the Triple Shape Memory Polymer Formation

Polymers ◽

10.3390/polym13121900 ◽

2021 ◽

Vol 13 (12) ◽

pp. 1900

Author(s):

Ramin Hosseinnezhad ◽

Iurii Vozniak ◽

Fahmi Zaïri

Keyword(s):

Polymer Blends ◽

Shape Memory ◽

Shape Memory Polymer ◽

Cellulose Nanofibers ◽

Polymeric Materials ◽

Novel Approach ◽

Phase Transition Temperatures ◽

Triple Shape Memory

The paper discusses the possibility of using in situ generated hybrid polymer-polymer nanocomposites as polymeric materials with triple shape memory, which, unlike conventional polymer blends with triple shape memory, are characterized by fully separated phase transition temperatures and strongest bonding between the polymer blends phase interfaces which are critical to the shape fixing and recovery. This was demonstrated using the three-component system polylactide/polybutylene adipateterephthalate/cellulose nanofibers (PLA/PBAT/CNFs). The role of in situ generated PBAT nanofibers and CNFs in the formation of efficient physical crosslinks at PLA-PBAT, PLA-CNF and PBAT-CNF interfaces and the effect of CNFs on the PBAT fibrillation and crystallization processes were elucidated. The in situ generated composites showed drastically higher values of strain recovery ratios, strain fixity ratios, faster recovery rate and better mechanical properties compared to the blend.

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